You have a couple options that I can think of... some easy, some not so easy.
First of all, You can increase the size of the tablespace. That's the easy one. But I guess you said you don't have room to do that.
Import the file with ROWS=NO. This will create the schema.
Then extract the DDL for the tables. Modify the DDL to use a smaller initial and next extent size. Then drop and recreate the tables with the new DDL. Then reimport with ROWS=YES and IGNORE=YES. That should help!
Then next is 10 MB as well, pct increase show 50%.
I am dealing with an export file that I need to import. None of the tables seem to have data that can fill even 1 mb of this 10 mb. I dont think db will try to take a next extent.
The error is something like " not able to allocate initial extent of 10MB for table accounts "